/// <summary>
/// Tries to create a manipulator for the given node. This method
/// also registers the property changed event handler.
/// </summary>
/// <param name="node">The input node</param>
/// <returns>true if manipulator was created</returns>
private bool TryCreateManipulator(NodeModel node)
{
//Can't create manipulator for node that is not selected.
if (!node.IsSelected)
{
return(false);
}
//Make sure we register property changed notification if node is selected.
if (trackedNodeGuids.Add(node.GUID))
{
node.PropertyChanged += OnNodePropertyChanged;
}
//No manipulator for frozen node or node in state of error
if (node.IsFrozen || node.IsInErrorState)
{
return(false);
}
//If the node already has a manipulator, then skip creating new one.
if (manipulatorDaemon.HasNodeManipulator(node))
{
return(false);
}
//Finally let the Daemon create the manipulator.
manipulatorDaemon.CreateManipulator(node, this);
return(true);
}
private void CreateManipulators(IEnumerable <NodeModel> nodes)
{
foreach (var nm in nodes)
{
if (nm.IsFrozen || !nm.IsSelected)
{
continue;
}
manipulatorDaemon.CreateManipulator(nm, this);
}
}
